ICM7361/7341/7321

Rev. A8

ICmic reserves the right to change the specifications without prior notice.

5

IC MICROSYSTEMS

Figure 1: Serial Interface Timing Diagram

CONTENTS OF INPUT SHIFT REGISTER

ICM7361 (12-Bit DAC)

MSB

LSB

C3

C2

C1

C0

D11

D10

D9

D8

D7

D6

D5

D4

D3

D2

D1

D0

Figure 2: Contents of ICM7361 Input Shift Register

ICM7341 (10-Bit DAC)

MSB

LSB

C3

C2

C1

C0

D9

D8

D7

D6

D5

D4

D3

D2

D1

D0

X

X

Figure 3: Contents of ICM7341 Input Shift Register

ICM7321 (8-Bit DAC)

MSB

LSB

C3

C2

C1

C0

D7

D6

D5

D4

D3

D2

D1

D0

X

X

X

X

Figure 4: Contents of ICM7321 Input Shift Register

C3

C2

C1

C0

DATA

FUNCTION

0

0

0

0

Data

Load Input Latch

0

0

0

1

Data

Update DAC

0

0

1

0

Data

Load Input Latch and Update DAC

0

0

1

1

X

No Operation

0

1

0

0

X

No Operation

0

1

0

1

X

No Operation

0

1

1

0

X

No Operation

0

1

1

1

X

No Operation

1

0

0

0

X

No Operation

1

0

0

1

X

No Operation

1

0

1

0

X

No Operation

1

0

1

1

X

No Operation

1

1

0

0

X

No Operation

1

1

0

1

X

No Operation

1

1

1

0

X

No Operation

1

1

1

1

X

No Operation

Table 1: Serial Interface Control Command

MSB

C2

C3

SCK

SDI

CS

Input Word for DAC N